Fountain-pen.



No. 744,642. PATENTED Nov. 17, 1903. H. W. STONE.

FOUNTAIN PEN.

APPLIGATION FILED FEB. 19, 1903.

N0 MODEL.

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Patented November 17, 1903.

PATENT OFFICE.-

HARRY W. STONE, OF NEW YORK, N. Y.,ASSIGNOR TO ARTHUR A. WATER MAN, OFWINCHESTER, MASSACHUSETTS, AND WILLIAM G. FRAZER AND HOBART W. GEYER, OFNEW YORK, N. Y-.

FOUNTAIN-PEN;

SPECIFICATION forming part of Letters Patent No. 744,642, dated November17, 1903;

Application filed February 19, 1903- Serial No, 144,031. (No model.)

To all whom it may concern:

Be it known that I, HARRY W. STONE, a

citizen of the United States, residing in the city of New York, boroughof Brooklyn, in the 5 county of Kings and State of New York, haveinvented-an Improvement in Fountain-Pens, of which the followingdescription, in connection with the accompanying drawing, is aspecification, like letters on the drawing representing like parts.

This invention relates to fountain-pens wherein a flexible sack withinthe barrel of the pen is used as an ink-reservoir.

The object of the invention is to provide a construction whereby the penmay be easily filled without soiling the hands and without the use ofextraneous means, such as a dropper.

One form of my invention is illustrated in the accompanying drawing, inwhich a represents the barrel or body of the pen, and b the pen-stockproper, which is mounted in one end of the hollow barrel. This pen-stockis provided with a shank b, which forms a friction-joint with thebarrel. The part b is also provided with an extension or neck 6 to whichthe flexible ink sack or reservoir 6 may be attached by any desirablemeans, such as wire or thread. This sack or reser- 0 voir may be made ofa section of flexible rubber tubing or any other suitable material. Theopposite end of the main barrel is pro-' vided with a screw-threadedbore 0t,which is of less diameter than the bore of the barrel,

55 leaving an integral shoulder a at this ex-. tremity of the barrel.Mounted in this bore is a screw-threaded shank .0, having a neck 0similar to the neck b upon which the opposite end of the flexible sack eis mounted.

40 The outer end of this shank c is provided with a knob or nut c, whichis firmly secured thereto by any suitable means, such as a rivet 0 Thediameter of this nut c is somewhat smaller than that of the barrel atfor a reason hereinafter set forth.

The device is also provided with a cap (1, which may be slipped over theend of the barrel and which covers the pen when the latter is not in useand which may be transferred to the opposite end thereof when the pen isin use.

As will be seen from the drawing, the opposite ends of the barrel orbody portion are somewhat tapered, and the pen-stock and the nut arecorrespondingly tapered in continutwisting the sack e, as shown indotted linesc and e. This movement serves to collapse the sack and expelthe greater part of the air therefrom. Upon now submerging the penstockb in ink and screwing the nut to the right or back into normal positionthe sack e will assume its normal distended condition, thereby drawingup a supply of ink by atmospheric pressure.

Should it be necessary from time to time to cause' the ink to flow morecopiously out upon the pen, this may be done by turning the not a to theleft slightly, thereby expelling a slight amountot' ink from thereservoir of the pen.

When the pen is in use, the cap I) may be removed from the pen andslipped upon the opposite end of the barrel, as shown in dotted lines.By reason of the fact that the nut c is tapered to a diameter slightlyless than that of the bore of cap d it is obvious that it would be atall times impossible for thecap d to rotate said nut, and therebyaccidentally agitate the ink-reservoir, when the cap is being placedupon or removed from the shank of the pen. This construction makes itpractically impossible to accidentally cause the pen to spurt.

My invention is not restricted to the particular embodiment thereofherein disclosed, but obviously may be varied within the spirit andscope of the invention.

I claim p 1. A fountain-pen comprisinga barrel,a cap adapted to coverthe pen and also to fit over the rear end of said barrel, a flexiblereservoir within said barrel, an exposed twisting member therefor at therear end of said barrel and of less diameter than the bore of said cap,whereby the latter may be freely applied to and removed from the rear ofsaid barrel Without danger of turning said twisting member and twistingsaid reservoir.

2. In a fountain-pen, a barrel, a body portion having oppositely-taperedends, a penpoint mounted at one of said ends and a cap adapted to fitover either tapering end of said barrel to cover the pen-point when thelatter is not in use, and to be carried upon the rear end when thepen-point is in use, a flexible reservoir within said barrel or bodyport-ion, and an exposed reservoir twisting member at the rear of saidbarrel or body portion, and of less diameter than the bore of said capto permit the latter to be freely applied to and removed from the rearof the said barrel or body portion without danger of turning saidtwisting member and its reservoir.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

HARRY W. STONE.

Witnesses:

ERNEST A. REED, JUSTIN D. HANSCOM.

